package com.lyz.dataStructure.algorithm.yuanfudao2020;/**
 * @Author:759057893@qq.com Lyz
 * @Date: ${Date} 19:29
 * @Description:
 **/

import java.util.Scanner;

/**
 *@Author:759057893@qq.com Lyz
 *@Date: 2019/8/3 19:29
 *@Description:
 **/
public class Main {
    public static void main(String[] args) {
       /* Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        String[] st = new String[n];
        for(int i = 0;i<st.length;i++ ){
            st[i] = sc.next();
        }
        for(int i = 0;i<st.length;i++ ){
            if(st[i].charAt(i)>='0'||st[i].charAt(i)>='9'){

            }
        }*/

        String s ="A3B";
        StringBuffer st = new StringBuffer();
        for(int i =0;i<s.length();i++){
           // st.append(s.charAt(i));
            /*if(i>1||i<9){
                System.out.println(s.charAt(i));
            }*/
            System.out.println(s.charAt(i));
        }
       // System.out.println(s);
       // System.out.println(st);
    }
}
